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PULSER
153
93
40
IMPORTANT: Read these
instructions before installation
!
and wiring of the product.
K 1 2 U 3 4 U K G G
Fig 1
Fig 2
G G
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Box 116 428 22 KÅLLERED SWEDEN
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INSTRUCTION
Triac controller for proportional control
of electric heating
PULSER is a complete proportional controller for electric heating. It
has automatic voltage adjustment and can be used with either built-
in sensor or external sensor. PULSER pulses the whole load On -
Off. The ratio between On-time and Off-time is varied 0 - 100% to
suit the prevailing heat demand. The current is always switched at
zero phase angle to prevent RFI.
PULSER is only intended for electric heating control. The control
principle makes it unsuitable for motor- or lighting control.
N.B. PULSER cannot control 3-phase loads, as one phase is
regulated.
Control principle
PULSER pulses the full load On - Off. PULSER adjusts the mean
power output to the prevailing power demand by proportionally
adjusting the ratio between On-time and Off-time. The pulse period
(=the sum of On-time and Off-time) is fixed 60 seconds.
PULSER has zero phase-angle firing to eliminate RFI.
PULSER automatically adjusts its control mode to suit the control
object dynamics.
For rapid temperature changes i. e. supply air control PULSER will
act as a PI controller with a proportional band of 20K and a reset
time of 6 minutes.
For slow temperature changes i. e. room control PULSER will act as
a P controller with a proportional band of 1.5K.
Assembly
Remove the front. The locking screw is behind the set-point knob.
Mount PULSER vertically with the cooling flange at the top. Use
screws with a maximum head diameter of 5.5mm.
If PULSER is to be used with the internal sensor, mount it approx.
5ft above floor level at a location with a representative temperature.
The air must be able to circulate freely around the PULSER without
disturbances from doors, furniture etc.
If PULSER is to be used with external sensor it may be placed in
any location.
N.B. PULSER emits approx. 20W of heat which must be dissipated.
N.B. Maximum ambient temperature at full load is 30°C.
Protection class: IP20.
INSTRUCTION
Electrical installation
The installation, which should be proceeded by a fully isolating
switch with a contact gap of at least 3 mm, should be carried out
by a qualified technician and in accordance with applicable
directives.
Supply voltage (fig 1)
Terminals 1 and 2. Not polarity sensitive.
Supply voltage: 200 - 415V AC, 50 - 60 Hz with automatic
voltage adjustment.
Maximum current 16A.
Load (fig 1)
Terminals 3 and 4.
Resistive single- or two-phase heater
Maximum load: 3680W at 230V (16A)
6400W at 400V (16A)
Minimum load: 230W at 230V (1A)
400W at 400V (1A)
N.B. The cooling flange is live.
Sensor (figs 2 - 6)
Terminals G and G. Not polarity sensitive.
N.B. When using external sensor the equivalent function in the
PULSER must be disabled. This is done by setting the DIP-
switches to the right of the terminal strip according to the
figure 3.
N.B. The PULSER sensors have high potential compared to
neutral and earth (>200V). Thus, wiring and installation of
the sensors must comply with local codes for line voltage
installations.
Night set-back (fig 7)
Terminal K and K.
Potential-free closure will give a night set-back of 0 - 10K.
Settable with a potentiometer in the PULSER.
Figures
Fig 1: Wiring of supply voltage and heater.
Fig 2: Switch setting for internal set-point and sensor.
Fig 3: Switch setting and wiring for internal set-point and external
sensor.
Fig 4: Switch setting and wiring for room control using TG-R4xx
as sensor and set-point.
Fig 5: Switch setting and wiring using external separate sensor
and TG-R4xx as set-point.
Fig 6: Switch setting and wiring using external, separate sensor
and potentiometer TBI-xx as setpoint.
Fig 7: Wiring of night set-back function.
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